CentOS 7 下zookeeper集群搭建

PS：需要提前安装JDK，linux下安装JDK

    #下载压缩包
    wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.14/zookeeper-3.4.14.tar.gz
    #解压
    tar -zxvf zookeeper-3.4.14.tar.gz

修改conf文件

    # The number of milliseconds of each tick
    tickTime=2000
    # The number of ticks that the initial 
    # synchronization phase can take
    initLimit=10
    # The number of ticks that can pass between 
    # sending a request and getting an acknowledgement
    syncLimit=5
    # the directory where the snapshot is stored.
    # do not use /tmp for storage, /tmp here is just 
    # example sakes.
    dataDir=/usr/zookeeper
    dataLogDir=/usr/zookeeper/log
    # the port at which the clients will connect
    clientPort=2181
    # the maximum number of client connections.
    # increase this if you need to handle more clients
    #maxClientCnxns=60
    #
    # Be sure to read the maintenance section of the 
    # administrator guide before turning on autopurge.
    #
    # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
    #
    # The number of snapshots to retain in dataDir
    #autopurge.snapRetainCount=3
    # Purge task interval in hours
    # Set to "0" to disable auto purge feature
    #autopurge.purgeInterval=1
    
    server.1=192.168.80.128:2888:3888
    server.2=192.168.80.131:2888:3888
    server.3=192.168.80.132:2888:3888

/usr/zookeeper下创建myid文件，通过vim分别写下id（分别为1、2、3）

设置环境变量

    [root@localhost conf]# export ZOOKEEPER_INSTALL=/opt/deploy/zookeeper-3.4.14  
    [root@localhost conf]# export PATH=$PATH:$ZOOKEEPER_INSTALL/bin  

    #启动
    ./zkServer.sh start  
    
    #测试zookeeper
    ./zkCli.sh -server 192.168.80.128:2181  

注意：如果出现拒绝连接，请检查如下：

1、防火墙是否关闭 systemctl stop firewalld

把虚拟机中的防火墙清一下

sudo iptables -F